Year	constant 2010 US$
1981	74452325737.6452
1982	76087019263.583
1983	74140885214.3337
1984	73323525896.0687
1985	77767739550.2944
1986	83523162299.1185
1987	85525356017.9147
1988	88255156992.3191
1989	94742377450.4123
1990	94118558514.1738
1991	96805145684.6491
1992	94904912219.6383
1993	100734625408.903
1994	101212579801.702
1995	104584633127.355
1996	113273387581.39
1997	117339571937.729
1998	120221461248.719
1999	125848160375.046
2000	126805341756.325
2001	132150429878.942
2002	154123771840.502
2003	158987879087.785
2004	165281986122.488
2005	174237150155.637
2006	183209757041.357
2007	191290923426.908
2008	201551353990.504
2009	208313839870.509
2010	218533765182.383
2011	225065540503.579
2012	238902093981.964
2013	246389798038.309
2014	257491627701.425
2015	266368421303.208
2016	275176396897.926
2017	287673216508.964
2018	294125338094.589